跟读练习: What Happened to the Dinosaurs? - 通过视频学习英语口语

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58 句
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Clues, clues, lookin’ for clues… Oh!
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It’s you! Hi!
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You were probably expecting Jessi, right?
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Well, she and Squeaks will be back next time, but right now they're off doing a bit of detective work in Yucatán, Mexico!
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You might say they’ve flown south for the winter.
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And of course I approve of that!
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Very bird-like of them.
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You see, we teamed up because we got curious about one of the greatest mysteries of all time: What happened to the dinosaurs?
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If you know me, you know that I loooove dinosaurs.
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And a long time ago — around 65 million years! — the dinosaurs were large and in charge.
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They had ruled the Earth for over 160 million years.
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And then, something strange happened, not just to dinosaurs, but to over half the Earth's species.
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That means a type of living thing, like oak trees, or cuckoo birds like me, or humans like you.
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All at once, about 65 million years ago, a bunch of different species just went extinct — they were completely wiped out!
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That’s because something big happened, causing huge changes on Earth.
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Changes in the weather, changes in the oceans … changes that made it harder for dinosaurs and other living things to find food and survive.
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Sure sounds mysterious!
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Most species will go extinct sometime, but what I wanna know is: What happened?
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What caused so many species – from tiny ocean creatures to big land reptiles like T-rex and Triceratops – to all go extinct at the same time?
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Scientists don’t know for sure, but they have a few different guesses.
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Some scientists think it happened because of a giant rock moving through space, called an asteroid, that crashed into the Earth.
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As it happens, that’s just what Jessi and Squeaks went to Mexico to learn more about!
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And Jessi’s giving us a call right now!
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How’s your vacation, Jessi?
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Jessi: Terrific, Dino!
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Squeaks and I are here at the Yucatán Peninsula in Mexico, and we’re learning so much!
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We learned that 65 million years ago, an asteroid blasted in from outer space and landed right here!
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This asteroid was enormous — it was 12 kilometers wide, so big that it would take hours just to walk from one side to the other.
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And when it landed, the explosion left an even bigger crater — a big bowl-shaped dent in the Earth.
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It’s called the Chicxulub crater, and it’s about 150 kilometers wide.
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The explosion sent lots of rocks and other debris raining down on anything nearby.
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And it sent billions of tons of soot into the air!
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Soot is the dusty stuff that’s left over when something burns up, Dino: That's one powerful explosion!
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Jessi: It sure was!
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It made the whole world really hot for a few days.
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And it started fires, giant waves, and huge, strong winds; and it shook the Earth, in a super powerful earthquake!
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Dino: Thanks for the hot tips, Jessi.
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Enjoy the rest of your trip!
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Now, some scientists think that the explosion from the asteroid sent so much soot into the air that it blocked out the Sun.
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For a while, it was really dark outside, even during the day!
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And without sunshine, it started to get cold, which meant some of the living things that were used to warmer weather couldn’t survive.
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There was another problem, too: plants need sunlight to live, so a lot of the plants back then died.
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Without plants, the animals that ate plants didn't have enough food, and without enough plant-eaters, the animals that ate meat went hungry too.
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That’s why some scientists think the asteroid was what caused the dinosaurs to go extinct!
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But other scientists think there may have been another cause, and that even before that asteroid crashed into the Earth, disaster was in the air for the dinosaurs.
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And they think the culprit was ... volcanoes!
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Because right around the time that the dinosaurs went extinct, one of the biggest volcanic eruptions in history was underway, in the area of the world that’s now India.
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For close to a million years, eruptions sent rocks and dust and soot onto the land and into the air.
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Just like with the asteroid impact, all this stuff in the air would have blocked out the Sun, making the Earth cooler and darker.
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So we don’t know for sure what darkened the skies and wiped out all those species — it could have been the asteroid, or it could have been the volcanoes, or both!
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We have so many clues, but the true culprit is going to remain a mystery... for now.
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Either way, the dinosaurs were pretty unlucky!
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A lot of things went very wrong for them, all at the same time.
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But even though life was hard, some types of plants and animals were able to find food and shelter while the Earth was changing, and they survived!
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Whatever happened all those years ago, life on Earth goes on, and we’re all here, solving mysteries together!
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Do you have any big mysteries you’re wondering about?
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Ask a grownup to help you and leave a comment below, or send us an email at [email protected].
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And if you want to join us next time, hit that subscribe button!

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本课的词汇与口语要点

这节 A2 级别的口语课以视频“What Happened to the Dinosaurs?”为素材。 视频中反复出现的词有：dinosaurs, Earth, asteroid, Jessi, plant。 这段视频共有 58 个句子、870 个单词可供跟读。 讲话部分时长为 4:28。 说话人语速较快，每分钟约 194 个词，会出现较多连读和弱读。 81% 的单词属于英语最常用的 3,000 词，其余的词建议在练习前先学一下。

视频中的重点词汇

视频中 15 个值得学习的单词，附发音和释义：

单词发音释义
dinosaur 名词/ˈdaɪnəsoɹ/恐龍 /恐龙
asteroid 名词/ˈæst(ə)ɹɔɪd/小行星
scientist 名词/ˈsaɪəntəst/科學家 /科学家
mystery 名词/ˈmɪs.t(ə.)ɹi/謎 /谜, 謎團 /谜团
explosion 名词/ɛkˈsploʊ.ʒən/爆炸, 爆發 /爆发
clue 名词/kluː/線索 /线索
wipe 动词/waɪp/擦, 擦拭
volcano 名词/vɑlˈkeɪ.noʊ/火山
crater 名词/ˈkɹeɪ.tɚ/環形山 /环形山, 撞擊坑 /撞击坑
eruption 名词/ɪˈɹʌpʃən/噴發 /喷发, 爆發 /爆发
curious 形容词/ˈkjʊɹ.i.əs/好奇, 有好奇心
hungry 形容词/ˈhʌŋ.ɡɹi/飢餓 /饥饿, 餓 /饿
solve 动词/sɒlv/解決 /解决
dust 名词/dʌst/чынтў, хуэйтў
vacation 名词/veɪˈkeɪ.ʃən/假期

视频中的语法

说话人最常用的结构，并附上视频中的原话：

结构视频中的用法
过去进行时 was/were + -ing — 过去某一时刻正在进行的动作were probably expecting · was changing
用 “might / may” 表可能 might/may + 动词 — 有可能但不确定的事might say · may have
最高级 the -est / the most … — 一组中最高或最低的the greatest · the biggest
现在进行时 am/is/are + -ing — 此刻或近期正在发生的事we're learning · you're wondering

需要注意的发音

说话人用了 10 次缩略和弱读形式，例如 don't, we're, couldn't。请按听到的简短形式来说。

  • “sh” 和 “zh” 音: explosion /ɛkˈsploʊ.ʒən/, eruption /ɪˈɹʌpʃən/, vacation /veɪˈkeɪ.ʃən/, shake /ˈʃeɪk/, shelter /ˈʃɛltə/

中文母语者容易读错的音：

  • /v/ — 不要读成 /w/，上齿轻触下唇: volcano /vɑlˈkeɪ.noʊ/, solve /sɒlv/, vacation /veɪˈkeɪ.ʃən/, detective /dɪˈtɛktɪv/, approve /əˈpɹuːv/
  • 词尾辅音 — 要读清楚，后面不要加元音: asteroid /ˈæst(ə)ɹɔɪd/, scientist /ˈsaɪəntəst/, extinct /ɪkˈstɪŋkt/, wipe /waɪp/, curious /ˈkjʊɹ.i.əs/
  • /r/ 和 /l/ 的区别: culprit /ˈkʌlpɹɪt/, reptile /ˈɹɛp.taɪl/

如何用这段视频练习

  1. 先完整听一遍视频，不要开口，记下不认识的单词。
  2. 先用 0.75 倍速逐句跟读，熟练之后再回到正常速度。
  3. 录下自己的声音并与原声对比，特别注意 dinosaur, asteroid, scientist 这类单词。

什么是跟读法？

跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。

影子跟读法: 阅读完整分步指南 →